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We present a direct imaging study of V892 Tau, a young Herbig Ae/Be star witha close-in stellar companion and circumbinary disk. Our observations consist ofimages acquired via Keck 2/NIRC2 with non-redundant masking and the pyramidwavefront sensor at K$^\prime$ band (2.12$\mu$m) and L$^\prime$ band(3.78$\mu$m). Sensitivity to low-mass accreting companions and cool diskmaterial is high at L$^\prime$ band, while complimentary observations atK$^\prime$ band probe hotter material with higher angular resolution. Thesemulti-wavelength, multi-epoch data allow us to differentiate the secondarystellar emission from disk emission and deeply probe the structure of thecircumbinary disk at small angular separations. We constrain architecturalproperties of the system by fitting geometric disk and companion models to theK$^\prime$ and L$^\prime$ band data. From these models, we constrain theastrometric and photometric properties of the stellar binary and update theorbit, placing the tightest estimates to date on the V892 Tau orbitalparameters. We also constrain the geometric structure of the circumbinary disk,and resolve a circumprimary disk for the first time.

High Angular Resolution Imaging of the V892 Tau Binary System: A New Circumprimary Disk Detection and Updated Orbital Constraints